Laxest

adjective

1. Lenient and allowing for deviation; not strict.

   "The rules are fairly lax, but you have to know which ones you can bend."

2. Loose; not tight or taut.

   "The rope fell lax."

3. Lacking care; neglectful, negligent.
4. Having a looseness of the bowels; diarrheal.
5. Describing an associative monoidal functor.